#7495: generalizing overloaded list syntax to Sized Lists, HLists, HRecords, etc -------------------------------------+------------------------------------- Reporter: nwf | Owner: carter Type: feature request | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: #9883 | Blocking: 9883 | Differential Revisions: -------------------------------------+------------------------------------- Comment (by s9gf4ult): Your example is much more complex, why so many parameters in `HetCons` and functional dependencies? Pattern matching overload is interesting idea. Pattern `(x:xs)` should be considered by compiler as `HCons x xs` for `HList`, but compiler knowns about `HList` just after type inference and see pattern `(x:xs)` after parsing and desugaring, so pattern `(x:xs)` must be replaced with `HCons x xs` after type inference somehow. I am not very familiar with GHC internals anyway. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7495#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler